Brown resigned his post as the Chief Operating Officer for the City of Detroit, and will be moving to Portland by the first week of December.

"I recognize there are many challenges in the U.S. wind industry," Brown said in a press release. "However, Vestas has tremendous potential and strength. This is evident in the management team, in the brand, and most important, in the many talented people who work at Vestas. I look forward to meeting the people behind the company’s success in the next few weeks and months."

Vestas officials said Monday it was Wyrsch's decision to leave the company.